@incollection{HelsperFissanFranzen1978, author = {Helsper, Christoph and Fissan, H. J. and Franzen, H.}, title = {Particle Size Distributions of Combustion Aerosols}, series = {Atmospheric Pollution 1978 : Proceedings of the 13th International Colloquium; 25-28 April 1978; Paris, France; Edited by Michel M. Benarie}, booktitle = {Atmospheric Pollution 1978 : Proceedings of the 13th International Colloquium; 25-28 April 1978; Paris, France; Edited by Michel M. Benarie}, editor = {Benarie, Michel M.}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {0-444-41691-9}, doi = {10.1016/S0166-1116(08)71583-8}, pages = {263 -- 266}, year = {1978}, abstract = {It has been observed that carcinogenic polycyclic aromatic hydrocarbons (PAH) are present in the atmosphere. Combustion processes are considered the most important sources for PAH. Among these, the burning of coal produces the highest emission, but in cities with high traffic density and low meteorological exchange activities, vehicle emissions determine the immission situation, especially in narrow streets. For estimating the potential health effects caused by PAH, it is sufficient to characterize the emission of PAH with respect to their physical state, concentrations, and, as far as the particulate phase is concerned, size distribution. The size distribution is important for transport phenomena, inhalation, and deposition in the respiratory tract. These parameters mainly depend on the combustion system, on system operating conditions, on the exhaust system, and on exhaust cooling conditions. At exhaust-gas temperatures in the range of ambient air temperatures, almost the whole emission of PAH is made up of particulate matter.}, language = {en} } @book{HelsperFissanAhrens1979, author = {Helsper, Christoph and Fißan, Heinz and Ahrens, Werner}, title = {Entwicklung eines Meßsystems zur direkten Bestimmung der Partikelgr{\"o}ßenverteilung von Aerosolen aus Verbrennungsvorg{\"a}ngen / Fißan, Heinz; Helsper, Christoph; Ahrens, Werner}, publisher = {Westdeutscher Verl.}, address = {Opladen}, isbn = {3-531-02827-8}, pages = {47 S.: 14 graph. Darst.}, year = {1979}, language = {de} } @article{Helsper1979, author = {Helsper, Christoph}, title = {Evaluation of Particle Size Distributions by Means of Particle Counters / Fißan, H. J. ; Helsper, C.}, series = {Proceedings of the First Workshop of Particulate Control : 16. - 17. March 1978, Kernforschung-sanlage J{\"u}lich GmbH / prepared by U.S. Environmental Protection Agency, Off. of Research and Development, Washington, D.C, 1979,}, journal = {Proceedings of the First Workshop of Particulate Control : 16. - 17. March 1978, Kernforschung-sanlage J{\"u}lich GmbH / prepared by U.S. Environmental Protection Agency, Off. of Research and Development, Washington, D.C, 1979,}, publisher = {Zentralbibliothek d. Kernforschungsanlage J{\"u}lich [in Komm.]}, address = {J{\"u}lich}, pages = {495 S.: Ill., graph. Darst.}, year = {1979}, language = {en} } @book{HelsperBesslingKiocketal.1979, author = {Helsper, Christoph and Beßling, Harro and Kiock, R. and Fißan, H. J.}, title = {Experimentelle Untersuchung der Partikelanzahlkonzentration im Windkanal f{\"u}r den Einsatz von laseranemometrischen Verfahren / Beßling, Harro; Kiock, R.; Helsper, C.; Fißan, H. J.}, publisher = {DFVLR}, address = {K{\"o}ln}, pages = {48 S.}, year = {1979}, language = {de} } @article{HelsperFissan1979, author = {Helsper, Christoph and Fißan, H. J.}, title = {Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C.}, series = {Aerosols in science, medicine and technology : conference / Gesellschaft f{\"u}r Aerosolforschung 7. 1979.}, journal = {Aerosols in science, medicine and technology : conference / Gesellschaft f{\"u}r Aerosolforschung 7. 1979.}, pages = {199 -- 205}, year = {1979}, language = {en} } @article{HelsperFissan1980, author = {Helsper, Christoph and Fißan, H. J.}, title = {Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C.}, series = {Advances in Particle Sampling and Measurement: Proceedings, Daytona Beach, EPA 600/9 80 004, 1980}, journal = {Advances in Particle Sampling and Measurement: Proceedings, Daytona Beach, EPA 600/9 80 004, 1980}, publisher = {National Technical Information Service}, address = {Springfield, Va.}, pages = {VII, 409 S.}, year = {1980}, language = {en} } @article{HelsperFissanMugglietal.1980, author = {Helsper, Christoph and Fißan, H. J. and Muggli, J. and Scheidweiler, A.}, title = {Particle Number Distributions of Aerosols from Test Fires}, series = {Journal of Aerosol Science. 11 (1980), H. 5-6}, journal = {Journal of Aerosol Science. 11 (1980), H. 5-6}, isbn = {0021-8502}, pages = {439 -- 446}, year = {1980}, language = {en} } @article{HelsperFissan1981, author = {Helsper, Christoph and Fißan, H. J.}, title = {Response Characteristic of a Polytec HC-15 Optical Particle Counter}, series = {Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Association for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Associa-tion for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Schmallenberg, 22.10.80 - 24.10.80}, journal = {Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Association for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Associa-tion for Aerosol Research: annual conference. 1980 : Gesellschaft f{\"u}r Aerosolforschung: annual conference. 1980 : Schmallenberg, 22.10.80 - 24.10.80}, publisher = {Pergamon Pr.}, address = {Oxford}, pages = {287 -- 292}, year = {1981}, language = {en} } @book{Helsper1981, author = {Helsper, Christoph}, title = {Bestimmung, Simulation und Korrektur des nichtidealen {\"U}bertragungsverhaltens klassifizierender Aerosolmeßverfahren}, publisher = {Univ.-Gesamthochsch}, address = {Duisburg}, pages = {65 S.}, year = {1981}, language = {de} } @article{HelsperFissanKapadietal.1982, author = {Helsper, Christoph and Fißan, H. J. and Kapadi, A. and Liu, B. Y. H.}, title = {Data Inversion by Simplex Minimization for the Electrical Aerosol Analyzer}, series = {Aerosol Science and Technology. 1 (1982), H. 1982}, journal = {Aerosol Science and Technology. 1 (1982), H. 1982}, isbn = {0278-6826}, pages = {136 -- 146}, year = {1982}, language = {en} } @article{HelsperFissanFranzen1976, author = {Helsper, Christoph and Fißan, H. J. and Franzen, H.}, title = {Bestimmung der Gr{\"o}ßenverteilung von Aerosolen aus Verbrennungsvorg{\"a}ngen mit einem elektrostatischen Aerosolanalysator}, series = {Aerosole in Naturwissenschaft, Medizin und Technik : Bericht der Tagung der Gesellschaft f{\"u}r Aerosolforschung e.V. 4, 1976}, journal = {Aerosole in Naturwissenschaft, Medizin und Technik : Bericht der Tagung der Gesellschaft f{\"u}r Aerosolforschung e.V. 4, 1976}, pages = {118 -- 126}, year = {1976}, language = {de} } @article{HelsperFissan1982, author = {Helsper, Christoph and Fißan, H. J.}, title = {Techniken zur Kalibrierung von Staubmeßger{\"a}ten / Fißan, H. J.; Helsper, C.}, series = {Schwebstoffe und St{\"a}ube : analyt. u. techn. Aspekte ; Kolloquium N{\"u}rnberg 1981}, journal = {Schwebstoffe und St{\"a}ube : analyt. u. techn. Aspekte ; Kolloquium N{\"u}rnberg 1981}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-090429-1}, pages = {59 -- 64}, year = {1982}, language = {de} } @article{HelsperFissan1982, author = {Helsper, Christoph and Fißan, H. J.}, title = {Zur Reaktion von Rauchdetektoren auf Brandkenngr{\"o}ßen / Fißan, H. J.; Helsper, C.}, series = {Tagungsbericht zum Internationalen Vortragsseminar {\"u}ber Probleme der automatischen Brandent-deckung / Institut f{\"u}r Elektrische Nachrichtentechnik. Technische Hochschule Aachen ; Fachgebiet Nachrichtentechnik. Universit{\"a}t Duisburg, Gesamthochschule . 8. Internationales Vortragsseminar "AUBE 82"}, journal = {Tagungsbericht zum Internationalen Vortragsseminar {\"u}ber Probleme der automatischen Brandent-deckung / Institut f{\"u}r Elektrische Nachrichtentechnik. Technische Hochschule Aachen ; Fachgebiet Nachrichtentechnik. Universit{\"a}t Duisburg, Gesamthochschule . 8. Internationales Vortragsseminar "AUBE 82"}, address = {Duisburg}, pages = {20 -- 37}, year = {1982}, language = {de} } @article{HelsperFissanMugglietal.1983, author = {Helsper, Christoph and Fißan, H. J. and Muggli, J. and Scheidweiler, A.}, title = {Verification of Ionization Chamber Theory}, series = {Fire Technology. 19 (1983), H. 1}, journal = {Fire Technology. 19 (1983), H. 1}, isbn = {1572-8099}, pages = {14 -- 21}, year = {1983}, language = {en} } @article{HelsperFissan1983, author = {Helsper, Christoph and Fißan, H. J.}, title = {Calibration of the Polytec HC-15 and HC-70 Optical Particle Counters / Fißan, H. J. ; Helsper, C.}, series = {Aerosols in the mining and industrial work environments, Vol. 3. Instrumentation, Marple, Virgil A. ; Liu, Benjamin Y.}, journal = {Aerosols in the mining and industrial work environments, Vol. 3. Instrumentation, Marple, Virgil A. ; Liu, Benjamin Y.}, publisher = {Ann Arbor Science}, address = {Ann Arbor, Mich.}, pages = {825 -- 829}, year = {1983}, language = {en} } @article{HelsperFissanKasper1984, author = {Helsper, Christoph and Fißan, H. J. and Kasper, W.}, title = {Kalibrierung der Partikelgr{\"o}ßenbestimmung von optischen Partikelz{\"a}hlern / Fißan, H. J.; Helsper, C. ; Kasper, W.}, series = {3. Europ{\"a}isches Symposion Partikelmeßtechnik : [PARTEC, eine Veranstaltung der Reihe Partikel-Technologie N{\"u}rnberg ; N{\"u}rnberg, 9. - 11. Mai 1984 ; preprints] = 3. European Symposium on Particle Characterization / Veranst.: GVC, Gesellschaft Verfahrenstechnik und Chemieingenieurwesen im Verein Deutscher Ingenieure (VDI). Red. Bearb.: Kurt Leschonski}, journal = {3. Europ{\"a}isches Symposion Partikelmeßtechnik : [PARTEC, eine Veranstaltung der Reihe Partikel-Technologie N{\"u}rnberg ; N{\"u}rnberg, 9. - 11. Mai 1984 ; preprints] = 3. European Symposium on Particle Characterization / Veranst.: GVC, Gesellschaft Verfahrenstechnik und Chemieingenieurwesen im Verein Deutscher Ingenieure (VDI). Red. Bearb.: Kurt Leschonski}, publisher = {NMA N{\"u}rnberger Messe- und Ausstellungsges.}, address = {N{\"u}rnberg}, pages = {263 -- 274}, year = {1984}, language = {de} } @article{HelsperNiessnerRoenicke1984, author = {Helsper, Christoph and Nießner, R. and R{\"o}nicke, G.}, title = {Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R.; Helsper, C.; R{\"o}nicke, G.}, series = {Aerosols : science, technology, and industr. applications of airborne particles ; proceedings of the 1. Internat. Aerosol Conference held Sept. 17-21, 1984, Minneapolis, Minn., U.S.A / ed.: Benjamin Y. H. Liu}, journal = {Aerosols : science, technology, and industr. applications of airborne particles ; proceedings of the 1. Internat. Aerosol Conference held Sept. 17-21, 1984, Minneapolis, Minn., U.S.A / ed.: Benjamin Y. H. Liu}, publisher = {Elsevier}, address = {New York [u.a.]}, isbn = {0444009477}, pages = {63 -- 66}, year = {1984}, language = {en} } @article{HelsperFissanThielen1983, author = {Helsper, Christoph and Fißan, H. J. and Thielen, H. J.}, title = {Determination of Particle Size Distributions by Means of an Electrostatic Classifier / Fißan, H. J.; Helsper, C. ; Thielen, H. J.}, series = {Journal of Aerosol Science. 14 (1983), H. 3}, journal = {Journal of Aerosol Science. 14 (1983), H. 3}, isbn = {0021-8502}, pages = {354 -- 357}, year = {1983}, language = {en} } @article{HelsperFissanKasper1984, author = {Helsper, Christoph and Fißan, H. J. and Kasper, W.}, title = {Calibration of Optical Particle Counters with Respect to Particle Size / Fißan, H. J. ; Helsper, C.; Kasper, W.}, series = {Particle and Particle Systems Characterization. 1 (1984), H. 1984}, journal = {Particle and Particle Systems Characterization. 1 (1984), H. 1984}, isbn = {1521-4117}, pages = {108 -- 111}, year = {1984}, language = {en} } @article{HelsperNiessner1985, author = {Helsper, Christoph and Nießner, R.}, title = {Application of a Multistep Condensation Nuclei Counter as a Detector for Particle Surface Composition / Nießner, R. ; Helsper, C.}, series = {Journal of Aerosol Science. 16 (1985), H. 3}, journal = {Journal of Aerosol Science. 16 (1985), H. 3}, isbn = {0021-8502}, pages = {201 -- 209}, year = {1985}, language = {en} }